Combined engine and dynamo-electric-machine frame.



1,272,949. Patented July 16, 1918 m I l M J a; Q m

\ gm INVEN D a ma? I UNITED STATES PATENT OFFICE- WILLIAM J. mar, 01MOUNT VERNON, NEW YORK, ASSIGNOR T0 SPLI'IDORF ELECTRICAL COMPANY, OFNEWARK, NEW JERSEY.

COMQEINED ENGINE AND DYNAMO-ELECTRIC-MACHINE FRAME.

Specification of Letters Patent.

Patented July 16, 1918.

Application filed December 12, 1916. Serial No. 136,487.

vented new and useful Combined Engines and Dynamo-Electric-MachineFrames. of which the following is a clear and exact de scription.

In its broader scope my invention pertains to dynamo electric machinesof that class frequently employed to perform various functions inconnection with gas engines and other prime movers. in a great manypower installations and especially those in which an internal combustionengine is the prime mover, the results afforded by the cooperation ofcertain types of electrical machines are of such an advantageous natureand secure to the entire system an eliieiency and satisfaction ofoperation that render their use but little short of indispensable. Astriking example is the power systems in automobiles and similarautovehiclcs, in which an internal combustion engine is used as a meansto propel the vehicle, and wherein dynamo electric machines areadvantageously employed to cooperate with said engine for the purpose ofstarting, lighting,

charging and whatever other such function that may be required. Morespecifically then, my invention has reference to these powerinstallations for autovehicles wherein dynamo electric machines arecooperatively associated with the prime mover for the performance ofsuch functions as above enumerated, and it especially pertains tocertain novel features in the relative construction and arrangementofthese elements.

One" of the chief objects is to provide an installation of the abovecharacter such that certain structural parts of these dynamo electricmachines are brought into a closer and more intimate relationship withthe en gine than has heretofore been the raetice.

a the attainment of this purpose I ave arranged so that the field framesof any suitable number of electric machines are formed as an integralpart of the engine itself, and inasmuch as said machines are ada ted tothe performance of various duties,-t ieir location relative to certainoperative elements of the'engine may be properly selected in order torender them in a position best suited to the achievement of the variousfunctions for which they are intended.

Another feature to be derived from this invention is the relatively lowcost at which an integral construction of this character may bemanufactured, and furthermore assembly may be more easily accomplished;

come apparent to those skilled in the art from the following descriptiontaken in conjunction with the accompanying drawin which forms a part ofthis specification, an wlierein Figure 1 is a side elevation showing, ina conventional manner, an internal combustion engine of the fourcylinder type, illustrating the manner and relative position in which Ihave associated therewith a motor and a generator.

Fig. 2 is a left hand end sectional view of Fig. 1. It will be notedthat both motor and generator are shown in section and accordingly thisview is taken partly on the line H and partly on the line y-y of Fig. 1.

Referring now in particular to the drawiugs, wherein like characters ofreference are used to designate like parts in each of the views, 1represents generally the casing of an internal combustion engine such ascommonly used in automobiles and the like. In the figures this engine isof the 4 cylinder type. but it is to be understood that the presentinvention is not limited to the exact 1 As is usually the-practice thecasin -1 serves to form the several cylinders for t e engine and also asa partial inclosure for the-crank shaft and its associated parts. At thebottom portion of this casing 1 are flanges 2.-A second member 3, of anydesirable-shape, is adapted to cooperate with the member 1 in order -toform a complete housing for the crank shaft. Said housing member 3 islikewise provided with flanges 4 which fit up against the flanges 2whereby said member may be secured in place as by means of belts orother suitable fastening means to .provide an oiltight casing withinwhich said crank shaft is adapted to operate. \Vithiu this casing thecrank shaft 5 is mounted by means of suitable bearings (not shown) andupon one end of which shaft is attached a flywheel 6. Said shaft isprovided with cranks 7, properly spaced thereon and whose number dep-nds upon the number of engine cylinders. lo crank shaft 5 is attached,by means of crank bearings J, a plurality of connecting rods one ofwhich is shown at 8. Connected to each of said rods is a piston 10whereby the explosive force of the combustible gas in the severalcylinders of the engine is transu'litted through the agency of theseveral elements above mentioned and becomes effective in imparting thedesired rotary motion to the crank shaft 5. Also Within the crank casingis the timer shaft 11 which carries a plurality of cam members one ofwhich is shown at 12. These cams are adapted to cooperate in the wellknown manner with the valve rods 13 whereby the explosive charges may beproperly admittedjto the engine cylinders. At 14 there is seen to be adiagrammatic representation of a sparking device, such as an electricalspark plug, whose duty it is to fire the explosive charges thus admittedto the engine cylinder to which it is attached. I will not attempt togive a further and more detailed description of the operation of theengine as the same does not form any part of my invention, and is wellunderstood by those skilled in the art to which it appertains.

Coming now to the gist of the resent invention. I have made provision wereby the frame structure of any suitable number of dynamo electricmachines may be formed in integral relationship with the casing of theengine itself. In the manufactureof engines it is frequently the customto cast the cylinders en bloc of cast iron, and according to myinvention means are provided whereby the field frames of said dynamoelectric machines are incorporatedin this casting as an integral portionthereof. By thus casting these parts in one structure and in the oneprocess a considerable saving in time and labor may be realized. I havetherefore shown in the present embodiment a motor anda generator adaptedfor such purpose as starting, lighting and charging, and which areintegrally associated with the engine in accordancenvith my invention.The field frames of these machinesarc represcnted'by the characteys 15and- 16 respectively. Since it is often preferable that the startingmotor be adapted to apply its turning effort to the flywheel of theengine for the purpose of startin the same, I have provided to have thetie] frame 15 of said motor located, as shown, at the rear end of theframe 1 in order that the motor armathre shaft 17 may be in its mostadvantageous position to engage the flywheel 6. One suitable method 'bywhich suchen' gagemcnt may be accom p ishcd is the use of the so-calledBendix drive, the driving pinion of which is adaptedfto automatically engage and cooperate with the teeth 18 on the periphery of flywheel 6. ()nthe other side of the engine and preferably near the front end thereofis the lighting and charging generatorwhieh likewise has its field frame16 cast as an integral part of the engine casing 1. By locating thegenerator in this position it may be very readily connected with thetiming shaft 11, to be driven thereby, as by means of gear, chain, orother suitable driving connections. However, it will be understood, ofcourse, that either the generator or motor may be connected direct] tothe crank shaft 5, and that furthermore t eir respective locationsrelative to the engine frame 1 is not restricted to the exact showing ofthe present embodiment but may be changed if desired to any suitablelocation, such as best adapts them to the particular enginewith whichthey are to cooperate. Frames 15 and 16 have integral pole pieces 19 and20 which may be ofany suitable number depending upon the particulardesign of the machine. In order to obtain arein forcement for thesupportof said frames 15 and 16 and to avoid the liability of dangerousstresses being set up in casing 1, due to the operation of the dynamoelectric machines, as for instance the starting of the engine, I haveprovided supporting brackets 21 and 22. These brackets are in form offlanges as best seen in Fig. 1 and are cast as an integral part of thedynamo machine frame and the engine casing.

From the above description it will. be apparent that my inventioninvolves a very desirable and economicmeans of associatin the auxiliarydynamo electric machines witE the engines of the ower systems of motorvehicles. Among tie features which it secures is the economic manner inwhicha construction of this type may be manufactured. For instance, asdescribed, the field frames .of any suitable number of machines, theirpole pieces andsupporting brackets may all be cast in a, single processas an integral part of the engine casing. And when the engine is set upto be machined, any necessary machinin may be likewise applied to theframe structures of said dynamo electric machines. In the subsequentassembly ofsaid machines the field coils may be quickly applied -inposition, the armatures inserted, and the end plates bolted in ositionon the machined ends of said field rarnes.

It will be apparent that I am not re-.

stricted to the exact details shown and described as many changes andalterations may be made without departing from the'spirit of the resent.invention. It is believed that all sue changes will cgme within thescope of the appended laims- Having thus described my invention what Iclaim is 1. In combination an engine and a plurality of dynamo electricma'chines,a casing for said engine, a field frame and pole piecesforeach of said. dynamo electric machines and support brackets for saidframes, said casing, frames, pole pieces and brackets all being formedas a single integral unitary structure.

2. An internal combustion engine and a plurality of dynamo electricmachineshaving in combination, a casing serving to form the cylinders ofsaid engine and also as a housing for the crank shaft thereof, and afield frame for each d namo electric machine having pole pieces t ereonand projecting inwardly therefrom, said field frames bein formedintegral with the engine casing, and adapted to receive rotatinga'rmatures between said pole pieces.

In combination with an automobile engine, an electric motor for thepurpose of starting said engine, and an electric generthe field frameand pole pieces of both motor ntor adapted to be operated by saidengine.

and generator being cast integral with the casing'of saidengine.

4. In combination with an autoveliicle en- .gine including a casingtherefor, a crank shaft and a flywheel operated by said shaft,

tegral with the engine casing.

5. A combined engine and dynamo electric machine structure comprisin acasin for said engine, and a field frame for sai dynamo machine havinginwardly projecting pole pieces with a rotating armature therebetween,said casing, frame and pole.

pieces being formed integral with each other.

6. In, combination, an internal combustion engine having a crank casethe walls of which are of magnetic material, and a p111 rality of dynamoelectric machines having their field structures of magnetic material,one of said dynamo electric machines acting as a starting motor for saidengine and another of the dynamo electric machines actin as a generatorfor producing electrical current, said field structures bein castintegrally with the crank case of said engine.

In witness whereof I aflix my signature.

WILLIAM J. HART.'

